Preheating in the Improvement of Knee Stability and Quadriceps Strength in Rugby Players

NCT04285645 | Withdrawn

• 1 other identifier: Stability
• Study Type: interventional
• Target: N/A
• Locations: 1 country
• Sites: 1

Brief Summary

Injuries to the lower limbs are the most common in rugby and within the lower limbs, the most common are those that affect the ligaments of the knee. That is why we will try to improve knee stability and quadriceps strength. The aim of this study is to evaluate the effectiveness of performing a pre-workout exercise protocol to improve knee stability and quadriceps strength in rugby players. Randomized controlled study, simple blind and with follow-up. 30 semi-professional rugby players will be randomized to the two study groups: experimental (pre-training exercise protocol that will include continuous running, squats, and squats and monopodal jumps) and control (without intervention). The intervention will last 4 weeks, with 2 weekly sessions of 15 minutes each. The study variables will be: knee stability (Y-Balance) and quadriceps strength (Single leg hop). The sample distribution will be calculated using the Kolmogorov-Smirnov test. The changes after each evaluation will be analyzed with the t-student test and with an ANOVA of repeated measures, the intra and intersubject effect will be observed. The effect size will be calculated using Cohen's formula. It is expected to see improvement in knee stability and quadriceps strength in athletes who performed the exercise protocol, after the study period.

Conditions

Rugby

Keywords

Rugby; Injury; Knee; Stability; Strength Training

Outcome Measures

Primary Outcomes (1)

• Change from baseline knee stability after treatment and at month

  It will be done using the Y-Balance test. The barefoot sportswoman will be placed with the toes in the center of the Y marked on the floor with adhesive tape. Each of them will have six trials with each foot in each direction (anterior, posterolateral and posteromedial). Subsequently, they will have three attempts with each leg in each direction, taking the best mark of each leg in each direction. The athlete must return to the initial position without losing balance, because if she does not succeed, that attempt will be void. The distance to be measured includes from the central mark where we place the toes to the point where the patient supports the tip of the toes. The unit of measure of this measuring instrument is the centimeter. A higher score indicates greater knee stability.

  Screening visit, within the first seven days after treatment and after one month follow-up visit

Secondary Outcomes (1)

• Change from baseline quadriceps strength after treatment and at month

  Screening visit, within the first seven days after treatment and after one month follow-up visit

Study Arms (2)

Experimental group

EXPERIMENTAL

Each session will last 15 minutes, taking place 2 days a week, over a period of 4 weeks. Prior to training, the exercise protocol will be carried out. Prior to the start of the intervention, the exercises to be performed will be explained to the participants and it will be verified that they are capable of performing them correctly.

Other: Warmup

Control group

NO INTERVENTION

Athletes included in the control group will continue with their usual training routine.

Interventions

Warmup OTHER

The intervention through exercises will consist in the application of the protocol described by Waldén et al. The objective of the application of this exercise protocol is to produce an improvement in the stability of the knee and the strength of the quadriceps. Before carrying out the exercises, a continuous race will be carried out for 5 minutes, once this first step is finished we will proceed to the realization of the exercises that will be, squats with both legs placing the hands on the hips, feet placed at the width of the shoulders, lowering with a straight back and without raising the heels of the floor, 3 series of 15 repetitions, squats on one leg with the hands on the hips and leg not supported extended forward, 3 sets of 10 repetitions with each leg and jump forward with one leg with the hands on the hips and jump back to return to the starting position, 3 sets of 10 repetitions with each leg

Also known as: Experimental group

Experimental group

Eligibility Criteria

• Age: 18 Years - 30 Years
• Sex: female
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• Female rugby players
• With an age range of 18 to 30 years
• That participate in the Valencian territorial category 1
• Without diagnosis of lower limb injury at the time of starting the study

You may not qualify if:

• Players who suffer an injury or illness that prevents them from performing the protocol
• Are performing another specific physiotherapy program of knee stability and quadriceps strength
• Who had undergone the anterior cruciate ligament less than a year ago
• Have not signed the informed consent.

Sponsors & Collaborators

• Investigación en Hemofilia y Fisioterapia: lead

Study Sites (1)

Universidad Europea de Madrid

Madrid, Comunity of Madrid, 28670, Spain

Location

MeSH Terms

Conditions

Wounds and Injuries

Interventions

Warm-Up Exercise

Intervention Hierarchy (Ancestors)

Exercise; Motor Activity; Movement; Musculoskeletal Physiological Phenomena; Musculoskeletal and Neural Physiological Phenomena

Study Design

• Study Type: interventional
• Phase: not applicable
• Allocation: RANDOMIZED
• Masking: SINGLE
• Who Masked: OUTCOMES ASSESSOR
• Purpose: PREVENTION
• Intervention Model: PARALLEL
• Sponsor Type: NETWORK
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: February 25, 2020
• First Posted: February 26, 2020
• Study Start: March 1, 2020
• Primary Completion: May 20, 2020
• Study Completion: June 10, 2020
• Last Updated: September 5, 2021

Record last verified: 2021-09

Locations

ES (1)